Metallurgical Engineering
2024 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE MT 2024 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 58–60 of 65. Imported answers require review unless explicitly marked reviewed.
Question 58
Open questionMTNAT2 marksNeeds review
A non-porous spherical Fe
O
particle of initial radius of
is topochemically reduced by H
, where the reactant-product interface is sharp and spherical, and reaction rate is proportional to the interfacial area. The radius of the unreacted Fe
O
particle after 600
will be ______
.
(Round off to the nearest integer).Given: Rate constant
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Open questionMTNAT2 marksNeeds review
A long metallic cylindrical rod of radius
, length
(
) and electrical resistivity
is kept in vacuum and is carrying an electric current of
. The only way it loses heat to the ambient is via radiation. If the ambient temperature is
, then the steady-state temperature of the rod is ________
.
(Round off to the nearest integer).Given: Stefan-Boltzmann constant =
Neglect the heat loss by the two flat ends of the rod and assume emissivity = 1.
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Open questionMTNAT2 marksNeeds review
100
of sphalerite concentrate containing 60% ZnS is COMPLETELY roasted with stoichiometric amount of pure oxygen. The amount of oxygen required is _____
. (Round off to one decimal place).Assume that the other components in the concentrate are not reactive.
Given: Atomic weight values (in
) for Zn = 65, S = 32, O = 16.Log in to check the answer
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